Global Patent Index - EP 2893974 A4

EP 2893974 A4 20160420 - WATER-ABSORBING RESIN, WATER-ABSORBING BODY, AND WATER-ABSORBING PRODUCT

Title (en)

WATER-ABSORBING RESIN, WATER-ABSORBING BODY, AND WATER-ABSORBING PRODUCT

Title (de)

WASSERABSORBIERENDES HARZ, WASSERABSORBIERENDER KÖRPER UND WASSERABSORBIERENDES PRODUKT

Title (fr)

RÉSINE D'ABSORPTION D'EAU, CORPS D'ABSORPTION D'EAU, ET PRODUIT D'ABSORPTION D'EAU

Publication

EP 2893974 A4 20160420 (EN)

Application

EP 13834858 A 20130801

Priority

  • JP 2012198832 A 20120910
  • JP 2013070919 W 20130801

Abstract (en)

[origin: EP2893974A1] One purpose of the present invention is to provide a water-absorbent resin having excellent water absorption characteristics and being capable of improving the shape-retaining characteristics of a water-absorbent material when used in the water-absorbent material. A water-absorbent resin obtained by performing reversed phase suspension polymerization of a water-soluble ethylenically unsaturated monomer in a hydrocarbon dispersion medium, using a radical polymerization initiator, said resin being capable of having both excellent absorption performance and shape retention in a water-absorbent material using the water-absorbent resin, as a result of fulfilling the conditions of: (1) having a water-retention capacity of physiological saline of at least 38 g/g; (2) having a water-absorption capacity of physiological saline under a load of 4.14 kPa of at least 15 ml/g; and (3) having a tan´ of a 50-fold swollen gel of at least 2.10 × 10 -2 .

IPC 8 full level

A61F 13/49 (2006.01); A61F 13/53 (2006.01); A61L 15/60 (2006.01); B01J 20/26 (2006.01); C08F 2/14 (2006.01); C08F 2/18 (2006.01); C08F 2/32 (2006.01); C08J 3/24 (2006.01)

CPC (source: CN EP US)

A61F 13/49 (2013.01 - CN EP US); A61F 13/53 (2013.01 - CN EP US); A61L 15/60 (2013.01 - CN EP US); B01J 20/267 (2013.01 - EP US); C08F 2/14 (2013.01 - EP US); C08F 2/18 (2013.01 - EP US); C08F 2/32 (2013.01 - CN EP US); C08F 122/02 (2013.01 - US); C08J 3/075 (2013.01 - EP US); C08J 3/245 (2013.01 - CN EP US); C08L 33/02 (2013.01 - US); C08J 2333/02 (2013.01 - CN EP US); Y10T 428/31855 (2015.04 - EP US)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 2893974 A1 20150715; EP 2893974 A4 20160420; EP 2893974 B1 20171108; CN 104507565 A 20150408; JP 6351505 B2 20180704; JP WO2014038324 A1 20160808; KR 102073446 B1 20200205; KR 20150054796 A 20150520; SG 11201501793S A 20150528; TW 201412349 A 20140401; TW I579006 B 20170421; US 10265226 B2 20190423; US 2015216740 A1 20150806; WO 2014038324 A1 20140313

DOCDB simple family (application)

EP 13834858 A 20130801; CN 201380037722 A 20130801; JP 2013070919 W 20130801; JP 2014534248 A 20130801; KR 20157005905 A 20130801; SG 11201501793S A 20130801; TW 102128268 A 20130807; US 201314426940 A 20130801